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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
NET INCOME (LOSS) $ 105,631 $ 15,042 $ (141,760)
Other comprehensive income:      
Foreign currency translation adjustment 248 0 0
Total other comprehensive income 248 0 0
COMPREHENSIVE INCOME (LOSS) $ 105,879 $ 15,042 $ (141,760)